This USB C PD to 2.1mm Cable with Selectable Voltage Button will help you get the most out of your USB C Power Delivery wall warts by letting you select any of the available voltages to power a device that expects a 5.5mm outer diameter / 2.1mm inner diameter DC plug. Now you can get rid of all those wall adapters you have stashed in the plastic bin in the basement! Instead of multiple wall warts with different power and current capabilities, this cable with a satisfyingly squishy button will convert any USB Type C power adapter with Power Delivery (PD) support into a 5V, 9V, 12V, 15V, or 20V DC power port at up to 2 Amps output.